json2toon.co

What is a JSON to TOON converter?

A JSON to TOON converter rewrites structured data into TOON or TONL, compact text formats designed for LLM workflows. The goal is to preserve the same data while reducing repeated syntax so prompts are smaller, easier to scan, and cheaper to send.

How much token reduction can TOON or TONL provide?

Token savings depend on the shape of the input. Arrays of similar objects and payloads with repeated keys usually compress best. On structured data, TOON and TONL often reduce prompt size by roughly 20% to 45% compared with standard JSON.

Does json2toon.co upload my data to a server?

No. The main web converter runs client-side in the browser, so your source data stays on your device during conversion. That makes it useful for privacy-sensitive payloads and quick experiments where you do not want to send raw data to a third party.

Which formats can I convert to TOON or TONL?

json2toon.co supports JSON, CSV, YAML, XML, and TOML inputs alongside TOON and TONL. You can use it to compare representations, convert existing payloads, and pick the format that fits your prompt, RAG, or configuration workflow.